Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu do voi snippets" » "hieu so voi snippets", "hieu bo voi snippets", "bieu do voi snippets", "hieu doi voi snippets", "hieu dao voi snippets", "hieu do moi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("hieu do voi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hieu do voi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hieu do voi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hieu do voi snippets"))) or ("locating bug code snippets"))*.